Kerosene-gas burner.



W. F. DAY.

KEROSENE GAS BURNER.

APPLICATION FILED NOV. 23. 1914.

1 5140 361 9 Patented May 25, 1915.

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THE NORRIS PETERS cu. PHOTF/LITHQ, WASHINGTON. D. c

WILBUR F. DAY, OF ST. PAUL, MINNESOTA.

KEROSENE-GAS BURNER.

Specification of Letters Patent.

Patented May 25, 1915.

Application filed November 23, 1914. Serial No. 873,429.

To all whom it may concern:

Be it known that I, WILBUR F. DAY, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented a new and useful Improvement in Kerosene-Gas Burners, of which the following is a specification.

The object of this invention is to provide an improved kerosene gas burner, which is more durable and effective in operation than devices of its kind heretofore used.

More particularly this invention is an improvement upon the construction set forth in the application for patent filed jointly by myself and Benjamin J. Miller, on the 20th day of July, 1914, bearing Serial Number 851,942. In the construction set forth in said application, it has been found in practice, that certain parts of the burner become overheated, and one of the objects of this invention is to so construct the retort that it is heated to the most eflective temperature for rendering the oil volatile and converting it into gas without impurities collecting and affecting the operation of the burner. It has also been found in practice with the prior construction referred to, that there is a tendency of the gases back firing. This objection is also overcome by the improvement in this application.

Another objection which has been found, is that impurities in the oil which are fed to the burner in the course of time efiect the efiiciency of operation, and another object of my invention is to overcome this objection.

To these ends, my invention consists of the features of construction and combinations of parts, which are hereinafter more particularly described and claimed.

In the accompanying drawing, Figure 1 is a side view, part in elevation, and part in section of a detail of a stove and of my invention applied thereto; Fig. 2 is a plan of the burner, partly in section; Fig. 3 is a side view of a modified form of the burner, partly in section; Fig. 4 is an elevation partly in section of the strainer, and Figs. 5 and 6 are sections of details.

In the drawing, with which I have illustrated my invention the burner is illustrated of single and double form, the improvements being applicable in either case. The parts forming a double burner, consist of a single stand A, upon which is mounted a standard 2, which is formed with a pair of outwardly spreading arms 3 and 4, which are of similar construction, and may be cast as an integral part of the standard. The standard is secured to the stand such as by bolting at 5, or in any other suitable manner. Each of the arms 3 and 4 is formed with a retort chamber, such as 6, into which the oil. or other fuel to be gasilied is introduced by vertical pipes 7, there being one pipe for each retort secured in the standard by casting or other suitable means. The lower end of each pipe depends below the stand, and has secured thereto by means of a nipple 8, and a threaded cap 9, a supply pipe 10, for kerosene oil or other fuel. In each nipple there is constructed a check valve 11, the object of which is to prevent gas forcing back into the supply pipe from the retort, and preventing all danger and inefficient operation from back firing. The upper end of the pipe 7 or tube projects above the lower surface of the retort chamber 6, and acts as a weir or dam to prevent condensate or other impurities flowing back into the supply pipe 7 from a well or trap 12, which is formed around the upper end of the pipe in the retort. Each of the outer ends of the arms or generators 3 and 4 is formed with a spreader 13, having a downwardly extending protuberance 14, that por tion of the arm lying between the spreader and the retort chamber being provided with transverse passages 15 therethrough, the purpose of which will hereinafter appear. The spreader portion of the arm is adapted to become heated by the flame produced from the burner proper to be hereinafter described, and to transmit part of its heat to the retort for preliminary reduction or gasifying of the oil or other fuel which is fed into the retort. Burners B and C of similar construction are placed, one below each of the Spreaders. Each burner consists of an air or gas mixing chamber 16 having a starting pan 17 across its lower portion, said parts being formed integral with the stand. The mixing chamber 16 is formed by an upwardly and inwardlv tapering wall 18 projecting above the pan, said pan being for the purpose of holding fuel such as oil which is ignited for heating the supply tube 20 extending across the air and gas mixing chamber. The supply tube 20 is connected with the outer end portion of the retort chamber 6 and depends downwardly therefrom, its lower end extending horizontally across the air and gas mixing chamber and formed with an upwardly projecting vent opening 21 centrally disposed within said chamber. The deflector 13 and its protuberance 14 are positioned directly over the air and gas mixing chamber to perform the function of spreading the flame issuing from said chamber most effectively.

In operation 'air is admitted upwardly into the mixing chamber 16 by means of the air passages 22 and 23. As the liquid fuel such as kerosene, distillate or crude petroleum is admitted into the retort the heat issuing from above the mixing chamber increases the temperature of the walls of the retort,

which is positioned substantially to one side from directly above the burner, thus converting the liquid fuel into gas and leaving little or no condensate. The gas which is thus generated passes down through the sup ply tube 20 and enters the mixing chamber 16 through the port 21. In this chamber 16, the gas is mixed with air, and the mixture is consumed within and above said chamber. Any condensate which collects during the process of starting the burner drops into the pan where it is caught and held until the contents of the pan are consumed or removed. The heat emanating from the mixing chamber is permitted to more thoroughly and quickly afiect thetemperature of the retort chamber and its contents due to the passages 15 as will be understood, and the valve 11 prevents gas in the retort from forcing back and igniting the fuel in either of the pies 10, due to over pressure and in case any of the ducts become stopped.

To start the burner, combustible fuel is placed in the pan and ignited, and the heat produced raises the temperature of the walls of the generator and supply tube,.thus. converting the fuel admitted into the generator into gas. For the purpose of preventing foreign substances in the, fuel oil entering the supply pipes 10, a strainer D is connected with said pipes through which the supply fuel issuing from the supply pipe 25 is caused to pass. This strainer consists of a tube 26 filled with sand and connected at one end to the supply pipe 25 and at its other end to a valved connection 27, by couplings 28 and 29, pieces of wire meshing '30 and 31 being placed at the ends of said tube for holding the sand so that the oil is fed through the sandduring its course toward the supply pipes 10. By this construction a very effective filter or strainer is provided, which intercepts any foreign substances which might otherwise tend to clop the supply pipes 10. V

The construction is susceptible of various modifications within the scope of my invention, Fig. 3 showing a single form of burner 33, which has the passages 35 formed therein in the same manner as in the construction illustrated in Fig. 1, 1s provided with a deflector 36, which is separably coupled to the arm by means of a yoke 37 on the deflector, passed over the arm and secured thereto by the set bolt 38. Otherwise the construction is substantially the same as the form illustrated in Fig. 1. Either form of construction is adapted to be used in the various ways in which burners of this character are generally employed. The application of the construction illustrated in Fig. 1 is shown applied in a stove. Part of the stove is indicated by E in Fig. 1, and the invention is shown placed by its stand upon the grate 39 below the stove lids 40.

The mixing chamber is formed with a trough extending longitudinally below the gas and fuel conducting tube 20 and between the air passages 22 and 23, said trough serving to convey part of the fuel oil from the pan below the tube 20 in 1 position when ignited to most efiiciently preheat the tube. The trough also acts as a guard to direct cold or partly heated air passing upwardly through the passages 22 and 23 away from direct contact with the tube. Otherwise cold air strikingthe tube would decrease the efficiency of its operation.

In accordance with the patent statutes, I have described the principles of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof, but I desire to have it understood that the construction shown is only illustrative, and that the invention can vbe carried out by other means and applied touses other than those above set forth within thescope of the following claims. 1

Having described my invention, what I claim as new and desire to protect by Letters Patent is 1. A device of the class described comprising abase, a standard mounted upon said base having a pair of outwardly spreading retort chambers, an air mixing chamber poing a base, a standard mounted upon said base, an arm carried by and extending to one side of said standard and having at one end a deflector, said arm being partially hollowed out to form a retort chamber provided with a well, a mixing chamber supported by said base below said deflector, a fuel supply duct to deliver into the Well of said retort chamber, and a gas conducting tube leading from said retort chamber into said mixing chamber, as and for the purposes specified.

3. A device of the class described comprising a base, a standard mounted upon said base, an arm carried by and extending to one side of said standard, said arm having a retort chamber therein formed with a well, a mixing chamber supported by saidbase at a point remote from said retort chamber, a fuel supply duct to deliver into said retort chamber, a gas conducting tube leading from said retort chamber into said mixing chamber, and means disposed above said mixing chamber and associated with said arm for transmitting heat from said mixing to said retort chamber.

4. A device of the class described comprising a base, a standard mounted upon said base, an arm carried by and extending to one side of said standard, said arm having a retort chamber formed therein adjacent said standard and projecting outwardly therefrom to form a supporting member, a mixing chamber mounted upon said base at a point remote from said retort chamber, a fuel supply duct to deliver into said retort chamber, a gas conducting tube leading from said retort chamber into said mixing chamber, and means disposed above said mixing chamber and adjustably associated with said supporting member for transmitting heat from said mixing to said retort chamber.

5. A device of the class described comprising a base, a standard mounted upon said base, an arm carried by and extending to one side of said standard, said arm having a retort chamber formed therein adjacent said standard and projecting outwardly therefrom to form a supporting member, a mixing chamber mounted upon said base at a point remote from said retort chamber, a fuel supply duct to deliver into said retort chamber, a gas conducting tube leading from said retort chamber into said mixing chamber, and a deflector adjustably carried by said supporting member above said mixing chamber for transmitting heat from said mixing to said retort chamber.

6. A device of the class described comprising a base, a standard mounted upon said base, an arm carried by and extending to one side of said standard, said arm having a retort chamber formed therein,a mixing chamber supported by said base, a fuel supply duct to deliver into said retort chamber, a gas conducting tube leading from said retort chamber into said mixing chamber, and a deflector carried by said arm above said mixing chamber and removed from said retort chamber for transmitting heat from said mixing to said retort chamber, the portion of said arm between said retort chamber and said deflector being provided with transverse openings therethrough, as and for the purposes specified.

7. A device of the class described comprising a base, a standard mounted upon said base, an arm carried by said standard and terminating at one end in a depending deflector, said arm having a retort chamber formed therein provided with a well, a mixing chamber supported by said base below said deflector, a fuel supply duct to deliver into the well of said retort chamber, a gas conducting tube leading from said retort chamber into said mixing chamber, and means for initially heating said gas tube and retort chamber, as and for the purposes specified.

8. A device of the class described comprising a base, a standard mounted upon said base, an arm carried by and extending to one side of said standard and having at one end a deflector, a retort chamber formed within said arm, said retort chamber having a de pressed portion forming a well, a mixing chamber supported by said base below said deflector, a fuel supply duct opening into said retort chamber to deliver into said well, and a gas conducting tube leading from said retort chamber into said mixing chamber, as and for the purposes specified.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

WILBUR F. DAY.

Witnesses STELLA L. WASGI-IENBERGER, F. G. BRADBURY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C." 

